International Journal of Tropical Insect Science

, Volume 37, Issue 4, pp 259–270 | Cite as

Silkworm disease incidence trends during the years 1992–2011 in the Murshidabad district of West Bengal, India

  • Zakir HossainEmail author
  • Satadal Chakraborty
  • Sunil Kumar Gupta
  • Atul Kumar Saha
  • Bharat Bhushan Bindroo


The Murshidabad District of West Bengal, India has practised traditional mulberry sericulture since time immemorial. One of the most important aspects for sustainable development of the sericulture industry is the control and prevention of silkworm diseases. The main objective of this study was to determine silkworm disease incidence over the period 1992–2011 in Murshidabad District and how environmental factors have contributed towards their occurrence. Data were collected from a crop-wise survey of silkworm diseases from 25 farmers (five farmers from five villages), who each had a separate rearing house, were progressive and had a capacity of rearing at least 100 disease free layings (dfls) in each crop. Disease incidence was expressed in percentage and calculated taking into consideration 40,000 larvae per 100 dfls. Crop-wise silkworm disease mortality data were correlated with meteorological data. Data collected from the continuous survey conducted in the district during 1992–2011 revealed that there was no set pattern of occurrence of silkworm diseases. However, maximum mortality (up to 30%) of silkworm due to diseases in all the seasons occurred mainly due to grasserie, as relative humidity remains high for most part of the year in this area.However, other than grasserie, for most of the period, disease incidencewas below 10%. This observation of the dominance of grasserie over other diseases in causing silkworm mortality calls for renewed emphasis on the preventive measures and development of disease forecasting models, for disease control. Another observation was that since 1993, pebrine, the deadliest disease of the silkworm, has not been reported from the farmers’ fields.

Key words

Bombyx mori sericulture flacherie muscardine grasserie pebrine 


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  1. Anonymous (1992) Annual Report, pp. 62–89. Central Sericultural Research & Training Institute, Mysore.Google Scholar
  2. Anonymous (2008) Chapter VII: The sericulture & silk textiles industry, pp. 91–102. In Annual Report 2007-08. Ministry of Textiles, Govt. of India, New Delhi.Google Scholar
  3. Anonymous (2013) Highlights of Activities: Annual Report 2012–13. Central Silk Board, Bangalore. 130 pp.Google Scholar
  4. Benchamin K. V. and Jolly M. S. (1986) Principles of silkworm rearing, pp. 63–106. In Proceedings of Seminar on Problems and Prospects of Sericulture (Edited by S. Mahalingam). Vellore, India: Tamil Nadu Agriculture University.Google Scholar
  5. Chattopadhyay G. K. and Chatterjee S. N. (1990) Need for advanced genetical research in silkworm Bombyx mori L., pp. 7.1.4. In Workshop Manual: Cloning and Characterization of Animal Gene (edited by P. K. Gupta and R. K. Mondal). DBT Laboratory, Department of Biochemistry, Bose Institute, Calcutta University, India.Google Scholar
  6. Chishti M. Z. and Schaf K. A. (1990) Studies on the polyhedral diseases of silkworm, Bombyx mori L. in Jammu and Kashimir State. Indian Journal of Sericulture 29, 155–157.Google Scholar
  7. Doreswamy C., Govindan R., Devaiah M. C. and Muniswamappa M. V. (2004) Deterioration of cocoon traits of silkworm, Bombyx mori L. by the synergistic infection with late larval flacherie pathogens. Karnataka Journal of Agricultural Science 17, 345–348.Google Scholar
  8. Ghosh J., Senapati S. K. and Baral K. (2000) Performance of silkworm breeds with reference to disease occurrence during different seasons under terai ecological conditions ofWest Bengal. Indian Journal of Agricultural Sciences 70, 234–238.Google Scholar
  9. Hazel J. R. (1995) Thermal adaptation in biological membranes: Is homeoviscous adaptation the explanation? Annual Review of Physiology 57, 19–42.CrossRefGoogle Scholar
  10. Jayramaiah M., Kuberappa G. C., Devaiah M. C. and Kalikal Y. (1986) White muscardine disease of silkworm and its management. Indian Silk 25, 15–16.Google Scholar
  11. Krishnan N. (2000) Survey of silkworm diseases in different sericultural districts of West Bengal. In Annual Report. Central Sericultural Research & Training Institute, Central Silk Board, Berhampore, India.Google Scholar
  12. Kumar K. P. K. and Naik S. S. (2011) Development of polyvoltinex bivoltine hybrids of mulberry silkworm, Bombyx mori L. tolerant to BmNPV. International Journal of Zoological Research 7, 300–309. doi: 10.3923/ijzr.2011.300.309.CrossRefGoogle Scholar
  13. Lakshminarayana Reddy P., Shankar Naik S. and Sivarami Reddy N. (2002) Implications of temperature and humidity on the adult eclosion patterns in silkworm Bombyx mori L. Journal of Entomological Research 26, 223–228.Google Scholar
  14. Liu S.-X. (1984) Identification on the resistance of silkworm, Bombyx mori L. races to six types of silkworm diseases [nuclear polyhedrosis virus, cytoplasmic polyhedrosis virus, Densovirus, Bacillus thuringiensis, pebrine spores, sodium fluoride]. Sericologia 24, 377–382.Google Scholar
  15. Prabhakara M. K., Bala Venkatasubbaiah M., Siva P. V., Baig M. and Datta R. K. (1990) Rate of spread of white muscardine in silkworm rearing. Indian Journal of Sericulture 36, 81–87.Google Scholar
  16. Rajasekhar R., Prasad B., Subramanyam R. C., Bhaskar M., Murali K. and Govindappa S. (1992) Variations in the tissue biochemical composition in the Muscardine infected silkworm larvae Bombyx mori (L). Indian Journal of Comparative Animal Physiology 10, 40–44.Google Scholar
  17. Samson M. V., Baig M., Sharma S. D., Balavenkatasubbaiah M., Sasidharan T. O. and Jolly M. S. (1990) Survey on the relative incidence of silkworm diseases in Karnataka, India. Indian Journal of Sericulture 29, 248–254.Google Scholar
  18. Savanurmath C. J., Basavarajappa S., Hinchigeri S. B., Ingalhalli S. S., Singh K. K. and Sanakal D. (1994) Relative incidence of the silkworm viral diseases in agroclimatic zones of Northern Karnataka, India. Bulletin of Sericulture Research Bangladesh 5, 51–55.Google Scholar
  19. Selvakumar T., Nataraju B., Balavenkatasubbaiah M., Sivaprasad V., Baig M., Kumar V., Sharma S. D., Thiagarajan V. and Datta R. K. (2002) A report on the prevalence of silkworm diseases and estimated crop loss, pp. 354–357. In Advances in Indian Sericulture Research (edited by S. B. Dandin and V. P. Gupta). Central Sericultural Research & Training Institute (CSR&TI), Central Silk Board, Mysore, India.Google Scholar
  20. Shirota T. (1992) Selection of healthy silkworm strain through high temperature rearing of fifth instar larvae. Reports of the Silk Science Research Institute 40, 33–40.Google Scholar
  21. Singh B. D., Baig M., Balavenkatasubbaiah M., Sharma S. D., Sengupta K. and Sivarami Reddy N. (1990) Studies on the relative susceptibility of different breeds of silkworm (Bombyx mori L.) to diseases under natural conditions. Indian Journal of Sericulture 29, 142–144.Google Scholar
  22. Sivaprakasam N. and Rabindra R. J. (1995) Incidence of Grasserie in silkworm, Bombyx mori L in selected districts of Tamil Nadu. Indian Journal of Sericulture 34, 100–104.Google Scholar
  23. Srivastava A. and Kumar R. V. (2009) Efficacy of three antibiotics on reduction of mortality rate in mulberry silkworm (Bombyx mori L.) in the monsoon season of Lucknow. Trends in Biosciences 2, 33–35.Google Scholar
  24. Steinhaus E. A. (1949) Principles of Insect Pathology. McGraw Hill, New York. 757 pp.Google Scholar
  25. Tanada Y. (1963) Epizootiology of infectious diseases, pp. 423–475. In Insect Pathology: An Advanced Treatise Vol. 2 (edited by E. A. Steinhaus). Academic Press, New York.CrossRefGoogle Scholar
  26. Tazima Y. and Ohnuma A. (1995) Preliminary experiments on the breeding procedure for synthesizing a high temperature resistant commercial strain of the silkworm, Bombyx mori L. Reports of the Silk Science Research Institute 43, 1–16.Google Scholar
  27. Ueda S., Kimura R. and Suzuki K. (1975) Studies on the growth of the silkworm, Bombyx mori. IV Mutual relationship between the growth in the fifth instar larvae and productivity of silk substance and eggs. Bulletin of the Sericultural Experiment Station Japan 26, 233–247.Google Scholar
  28. Ueda S. and Lizuka H. (1962) Studies on the effects of rearing temperature affecting the health of silkworm larvae and upon the quality of cocoons —1. Effect of temperature in each instar. Acta Sericologia (in Japanese) 41, 6–21.Google Scholar
  29. Vijaya Kumari K. M., Rajan R. K., Himantharaj M. T., Nataraj B. and Rekha M. (2001) Influence of temperature and relative humidity on the rearing performance and disease incidence in CSR hybrid silkworms, Bombyx mori L. International Journal of Industrial Entomology 3, 113–116.Google Scholar
  30. Willmer P., Stone G. and Johnston I. (2004) Environmental Physiology of Animals. Wiley-Blackwell, Oxford, UK. 768 pp.Google Scholar

Copyright information

© ICIPE 2017

Authors and Affiliations

  • Zakir Hossain
    • 1
    Email author
  • Satadal Chakraborty
    • 1
  • Sunil Kumar Gupta
    • 2
  • Atul Kumar Saha
    • 1
  • Bharat Bhushan Bindroo
    • 1
  1. 1.Central Sericultural Research & Training InstituteCentral Silk BoardIndia
  2. 2.P2 Basic Seed Farm, National Silkworm Seed OrganizationCentral Silk BoardPurneaIndia

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